Launch strategy for Indian lunar mission and precision injection to the Moon using genetic algorithm |
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Authors: | V Adimurthy R V Ramanan S R Tandon C Ravikumar |
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Institution: | (1) Aeronautics Entity, Vikram Sarabhai Space Centre, 695 022 Thiruvananthapuram, India |
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Abstract: | The Indian lunar mission Chandrayaan-1 will have a mass of 523 kg in a 100 km circular polar orbit around the Moon. The main
factors that dictate the design of the Indian Moon mission are to use the present capability of launch vehicles and to achieve
the scientific objectives in the minimum development time and cost. The detailed mission planning involves trade-off studies
in payload optimization and the transfer trajectory determination that accomplishes these requirements. Recent studies indicate
that for an optimal use of the existing launch vehicle and space-craft systems, highly elliptical inclined orbits are preferable.
This indeed is true for the Indian Moon mission Chandrayaan-1. The proposed launch scenario of the Indian Moon mission program
and capabilities of this mission are described in this paper, highlighting the design challenges and innovations. Further,
to reach the target accurately, appropriate initial transfer trajectory characteristics must be chosen. A numerical search
for the initial conditions combined with numerical integration produces the near accurate solution for this problem. The design
of such transfer trajectories is discussed in this paper. |
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Keywords: | Ascent trajectory parking orbit lunar transfer trajectory translunar injection targeting genetic algorithm |
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